Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6439340 | Acoustically treated structurally reinforced sound absorbing panel | — | 2002-08-27 |
| 5855324 | Drip irrigation hose and method of its manufacture | Michael DeFrank, Wayne Hackman | 1999-01-05 |
| 5722601 | Drip irrigation hose and method of its manufacture | Michael DeFrank, Wayne Hackman | 1998-03-03 |